Salivary duct carcinoma- contemporary nuts and bolts from pathologist perspective.

INTRODUCTION: Salivary gland carcinomas are highly heterogeneous malignancies that present a complex variety of histological features and distinct clinical behaviors, with salivary duct carcinoma (SDCa) as the most clinically severe and aggressive subtype. The standard of care for these patients is a combined approach of surgery followed by radiotherapy. The aggressive clinical course of SDCa is primarily driven by frequent disease recurrences and systemic spread. AREAS COVERED: The publication of WHO 5th Classification of Head and Neck tumors has sparked a surge in research targeting SDCa. Owing to the highly aggressive behavior of the tumor, most literature heavily emphasizes the molecular pathology of SDCa.A systematic literature search was conducted using the PubMed with the following search terms: salivary duct carcinoma AND pathology OR updates OR molecular OR signaling pathway OR gene expression OR mutation OR oncogene OR tumor suppressor OR DNA methylation OR tumor microenvironment. Results were limited to primary research articles in English language. EXPERT OPINION: This article outlines key advancements in SDCa morphology, molecular pathology, and targeted therapies. Patient management in precision oncology will be fundamentally transformed by the classification of new morphologic subtypes, the discovery of molecular biomarkers, and an enhanced comprehension of tumor microenvironment.